Mixing and washing machine.



No.4 736,389. l PATENTED AUG. 18, 1903. T. HASKINS.

MIXING' AND WASHINGl MACHINE. n -v APPLwAToN rum) un ze, 1902. no mmm.. s sums-snm' 1.

Hmninmmuluf; L A

IANtINNTI-II)V AUG. 18, 1903.

I T. IIAsIIINs.

MIXING AND WASHING MACHINE.

APPLICATION FILED MAY 26, 1902.

2 SHEETS-SHEET' 2.

N0 MODEL.

WM5/nhs,

Patented August 18, 1903.

PATENT OFFICE.

THOMAS HASKINS, OF LASALLE, ILLINOIS.

MIXING AND WAS'HING MACHINE.

SPECIFICATION.formingpart of Letters Patent No. 736,389, dated August 18, 1903.

VApplication filed May 26, 192..

To all whom it may concern/.-

Be it known that I, THOMAS HAsKINs, a'citizen of the United States, residing at Lasalle, in the county of Lasalle and State of Illinois, have invented a new and useful Mixing and Washing Machine, of which the following is a specification.

\ so arrange and construct the device that theV supply may be cut oif at any time in order toI i avoid the mixing of more material than is This invention relates to certain improvements in machines for mixing cement, concrete, and other substances, and has for itsv principal object to provide an improved device which will :rapidlyl and thoroughly mix cement with gravel, broken stone, and llike material to form concrete for paving and other purposes.

A further object of the invention isto provide a machine of this ,class in which the quantity of cement supplied to the other ma.

terial in the mixing-trough may be accurately regulated and evenly distributed.

A still further object of the invention is to A still further object of the invention is to so arrange and construct thefmachine as to provide for the washing of gravel, broken stones, and other granulated material.

With these and other objects in view the invention consists in the novel construction and arrangement of parts hereinafter described,illustrated in the accompanying drawings, and particularly pointed out in the appended claims.

' In the drawings, Figure lisa longitudinal sectional elevation of a mixingandwashing machine constructed in accordance with my invention. Fig. 2 is an endelevation of the same, partially in section, on the line 2 2 of Fig. l. Fig.3 is a plan view, of the machine.

Similar n umerals ofvreference are employed to indicate corresponding parts throughout the several figures of the drawings.

10 designates an open-top trough having a semicircular bottom portion and provided at Serial No. 109,069. g (No model.)

its opposite end with bearing-blocks 1l for the support of a longitudinally-disposed hollow shaft l2, on which is bolted a helical feed- Ascrew 12.', preferably formed. of sheet metal and having inner flanges 13, by which it may zbe bolted to the shaft.

The trough is lsupported on a transverse block 14, having carlrying-wheels l5, which are disposed at a point l near one end of the machine, where the great- :est weight is, and near the opposite end of said trough are two bracing-legs 16, which Aextend from side sills 17 to the ground, these `legs being strengthened by diagonal bracebars 18, as shown in Fig. l. `The legs 16 are placed ata suicient distance from the end of the trough to permit a wheelbarrow or other receptacle to be placed under the dischargeopening 20 in the bottom of the trough withJ out inconvenience, and thus render it unnec- 1 essary to shovel the material from the ground to the wheelbarrows. i As a convenient means of moving the machine from place to place I Iemploy'a` U-shapedhandle 2l, adapted to socket-pieces 22 on the side sills, so that the handle may be moved in until the cross-bar is close to the end of the trough and out of the Way of the workmen.

At the front end of the machine is a feedhopper 25, arranged-immediately above the ltrough and having outwardly-flaring sides to permit the gravel or broken rock to be shov- `eled into the machine from one or both sides,

as may be required.

. VAt the .top ofthe trough are outwardly-pro `jecting flanges 26, through one of which is formed an opening for the passage of the mast of a'crane-arm 27, the foot of the mast being stepped in a socket 28, carried by one of the side sills, so that it may be freely revolved or removed when required.

The crane-arm serves to support a cementreceptacle 30, in the form of a cylindrical ICO and is held in place by hook-bars 39, extending from the edges of the hopper to the h'ood.

In the mouth of the hood is a curved screen 40, the highest portion of which is under the center of the discharge-mouth, so that the falling cement will be evenly distributed by the screen and the mixture with the material in the trough rendered more uniform.

The hollow shaft 12 is provided with a balance-wheel 4l, to which may be attached a crank 42 when the device is to be operated by manual power, or the wheel 4l may be made to receive a driving-belt or may be in the form of a gear-wheel operated from any suitable source of power. y

In some cases the cement will cake in the receptacle and the flow will be rendered nneven and irregular, especially during. damp weather, and in order to render the discharge more certain and positive I employ a tappetarm 43, pivoted in a bearing 44, projecting from the hopper,'one end of the tappet-arm being provided with a block 45, of wood or similar material, for contact with the lower portion f the receptacle. The lower end of the tappet-arm is weighted and extends into the path of movement of one or more pins carried by the balance-wheel.

In the operation of the device the receptacle is filled with cement, the capacity of the receptacle beingsuch as to enable it to receive a quantity sufficient for a comparatively long time. The plug-valve 34 is then opened to the desired extent and the material constituting the body of the concrete is shoveled or otherwise fed to the hopper. The shaft is continuously revolved and the feed-screw in the trough t-horoughly mixes the material and at the same time feeds it in the direction of the discharge-opening. Water is supplied during the mixing operation, so that the material discharged from the opening 2O into the wheelbarrows or other receptacles will be v thoroughly-'mixed concrete.

By the employment of a 'machine of this character I am enabled to obtain a continuous supply of concrete without the employment of a large force of laborers and at the same time prevent danger of the setting of one section of the pavement or other work in advance of the mixing of a fresh supply.

the sand is retained and the water allowed to escape.

While the construction herein described, and illustrated in the accompanying drawings, is the preferred form of the device, it is obvious that various changes in the form,pro portions, size, and minor details ofthe structure may be made without departing from the spirit or sacrificing' any of the advantages of the invention.

Having thus described the invention, what I claim isl. The combination with a trough having a hopper at one end and a discharge-opening at the opposite end, of a conveying and mixing device arranged within the trough, a freelymovable cementcontaining vessel loosely connected to the hopper, a supporting means to which said vessel is hung, said vessel having a discharge-opening immediately above the hopper, a screen carried by the'vessel, a tappet member adapted to strike against the side of the vessel, and means for actuating said tappet member.

2. The combination with a mixing-trough having a hopper at one end and a dischargeopening at the opposite end, of a conveying and mixing device arranged within the trough, a cement-receptacle disposed above the hopper and having a discharge-opening, and an arched screen carried by the receptacle at a point below said discharge-opening.

3. The combination of Va trough having a hopper and a discharge-opening, of a conveying and mixing device disposed within the trough, a cement-receptacle having a bottom discharge-opening, a valve for closing said opening, a tappet memberadapted to strike the receptacle to agitate the cement, means for actuating the tappet, a supportingdevice carrying the receptacle and permitting free movement thereof, and means for raising and lowering said supporting device.

4. The combination with a trough having a hopper and a discharge-opening, a mixing device arranged within the trough, a removable containing vessel arranged above the hopper and having an open top and a lower contracted discharge-opening, a screen arranged near the top of the vessel for preliminary screening of the material in advance of its entrance to said vessel, a second screen carried by the vessel at a point below the contracted discharge-opening, avalve adapted to said opening, and a valve-operating means extending outside the vessel.

5. The combination with the trough having a hopper at one end and a discharge-opening IOO IIO

at the opposite end, of a hollow shaft extending longitudinally of the trough, a helical i conveyer secured to and rotating with the shaft, means for turning the shaft, a containing vessel arranged above the hopper and having a bottom discharge-opening, a tappet for agitating the Vessel, said tappet comprising an angular bar having an intermediate portion adapted to a bearing orsupport at the top of the hopper and provided with a horizontal arm for engaging the wall of the vessel, a weight forming a part of an approxiwinately vertical depending portion of said arm, a wheel secured to the shaft, and tappet-pins carried by said wheel and adapted to operate the tappet. i

6.: The combination with a hopper, of a con-` `taining vessel mounted thereabove and having aY lower discharge-opening, an arched 2o screening device carried by said vessel at a my own I have hereto affixed my signature in 35 the presence of two witnesses.

THOMAS HASKINS. Witnesses: t

M. C. OBYRNE, V. L. OBYRNE. 

